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Method for laser cladding of wear-resistant and impact-resistant coating on cast steel surface

A technology of laser cladding and impact-resistant layer, applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve problems such as the quality decline of cladding layer, reduce defects, improve wear resistance and reduce wear Effect with impact resistance, good bonding effect

Active Publication Date: 2018-04-20
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical solution of the present invention: In order to solve the problem of the degradation of the quality of the cladding layer caused by the pores and slag inclusion defects in the cast steel matrix during the laser cladding process of the cast steel material, a laser cladding wear-resistant laser cladding on the steel surface is provided. Impact-resistant coating method to realize the preparation of high wear-resistant and impact-resistant coatings without pores and slag inclusions

Method used

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  • Method for laser cladding of wear-resistant and impact-resistant coating on cast steel surface
  • Method for laser cladding of wear-resistant and impact-resistant coating on cast steel surface
  • Method for laser cladding of wear-resistant and impact-resistant coating on cast steel surface

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Effect test

Embodiment 1

[0051] In this embodiment, cast steel ZG 42CrMo is used as the matrix, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C:0.02%, Si:0.1%, Mn:0.4%, Cr:15.5%, Co: 2.0%, Mo: 15.5%, W: 3.8%, Nb: 0.31%, Fe: 0.7%, Ni: balance; the wear-resistant and impact-resistant layer material is iron-based alloy powder, chemical composition (mass percentage of each element) For: C: 0.30%, Si: 3.5%, Cr: 10.5%, B: 2.0%, Fe: 10.0%, Ni: balance;

[0052] The specific implementation steps are as follows:

[0053] (1) After weighing the nickel-based alloy powder and the iron-based alloy powder, dry them in a vacuum oven at 80°C for 90 minutes;

[0054] (2) Grinding the ZG 42CrMo surface to be treated with sandpaper for roughening treatment, and then cleaning the oil stain with acetone for later use;

[0055] (3) Preheat ZG 42CrMo at 400°C for 1 hour;

[0056] (4) Perform laser melting treatment on the preheated ZG 42CrMo, wher...

Embodiment 2

[0060] In this embodiment, cast steel ZG 40Cr is used as the substrate, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C:0.025%, Si:0.12%, Mn:0.43%, Cr:16%, Co: 2.4%, Mo: 16%, W: 4.2%, Nb: 0.34%, Fe: 0.75%, Ni: balance; the wear-resistant and impact-resistant layer material is nickel-based alloy powder, chemical composition (mass percentage of each element) For: C: 0.32%, Si: 3.9%, Cr: 11, B: 2.3%, Fe: 10.5%, Ni: balance; the specific implementation steps are as follows:

[0061] (1) After weighing the nickel-based alloy powder and the iron-based alloy powder, dry them in a vacuum oven at 85°C for 100 minutes;

[0062] (2) Grinding the surface of ZG 40Cr to be treated with sandpaper for roughening treatment, and then cleaning the oil stain with acetone for later use;

[0063] (3) Preheat ZG 40Cr at 450°C for 1 hour;

[0064] (4) Perform laser melting treatment on the preheated ZG 35SiMn, wherein the la...

Embodiment 3

[0068] In this embodiment, cast steel ZG 35SiMn is used as the substrate, and the base layer material is nickel-based alloy powder. The chemical composition (mass percentage of each element) is: C:0.03%, Si:0.14%, Mn:0.46%, Cr:16.5%, Co: 2.8%, Mo: 16.5%, W: 4.6%, Nb: 0.37%, Fe: 0.8%, Ni: balance; the wear-resistant and impact-resistant layer material is nickel-based alloy powder, chemical composition (mass percentage of each element) For: C: 0.34%, Si: 4.3%, Cr: 11.5%, B: 2.6%, Fe: 11.0%, Ni: balance; concrete implementation steps are as follows:

[0069] (1) Dry the nickel-based alloy powder and the iron-based alloy powder in a vacuum oven at 90°C for 120 minutes after weighing;

[0070] (2) Grinding the surface of ZG 35SiMn to be treated with sandpaper for roughening treatment, and then cleaning the oil stain with acetone for later use;

[0071] (3) Preheat ZG 35SiMn at 500°C for 1 hour;

[0072] (4) Perform laser melting treatment on the preheated ZG 35SiMn, wherein the l...

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Abstract

The invention discloses a method for the laser cladding of a wear-resistant and impact-resistant coating on a cast steel surface. The method comprises the following steps: 1, drying metal powder for cladding for 90-120min at temperature of 80-90DEG C; 2, grinding the to-be-processed surface of cast steel with abrasive paper to carry out frosting treatment, and then, using acetone to clean oil stains for a standby purpose; 3, carrying out preheating treatment on the cast steel at 400-500DEG C; 4, carrying out laser cladding treatment on the preheated cast steel surface; 5, after laser claddingtreatment is finished, carrying out coaxial powder feeding and the laser cladding of a metal alloy bottom coating on a formed laser solidified layer; and 6, carrying out coaxial powder feeding and thelaser cladding of a metal alloy wear-resistant and impact-resistant layer again on the formed metal alloy bottom coating.

Description

technical field [0001] The invention belongs to the field of laser processing and relates to a method for laser cladding a wear-resistant and impact-resistant coating on the surface of cast steel. Background technique [0002] Cast steel is a general term for iron-based alloys used to produce castings that do not undergo eutectic transformation during solidification, in which carbon is the main element, and the content is between 0 and 2%. According to the carbon content in cast steel, cast steel can be divided into: low carbon steel, medium carbon steel and high carbon steel; according to the content of alloy elements in cast steel, cast steel can be divided into: casting Low alloy steel, cast medium alloy steel and cast high alloy steel. In addition to the above types, it also includes cast special steel, such as cast stainless steel, cast wear-resistant steel and cast heat-resistant steel. At present, cast steel materials are widely used in heavy industries such as mach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/05
CPCC22C19/056C22C19/058C23C24/106C23C28/021
Inventor 石岩李云峰刘佳陈奎明倪聪
Owner CHANGCHUN UNIV OF SCI & TECH
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